491.on the out skirts(of)在城郊
492.owe…to 把…归于…
493.on one’s own(=along，without help)单独
494.of one’s own 某人自己的
495.keep pace with 跟…齐步前进
496.go to great pains=take pains 下功夫，努力
497.part with(=give up，sell)舍弃，卖掉
498.participate in(=take part in)参加
499.(be)particular about 讲究，挑剔(吃，穿)
500.in particular(=especially)特别是，尤其
501.(a)passion for 对…的热爱，热情
502.be patient with 对…耐心
503.pay for 赔偿，付款，报偿，处罚
504.pay…for 付…的钱
505.(be)at peace with 与…和睦相处;in peace(=peacefully)安静，平安
506.peculiar to… 特有的，独具的
507.penalty for 对…的处罚，罚金
508.perform on the piano(=play the piano)演奏钢琴
509.persist in 坚持，固执
510.in person 亲自，当面
